Brake-shoe for railway-cars.



PATENTED DEC. 18, 1906.

W. H.- MINER.

BRAKE SHOE FOR RAILWAY CARS.

APPLICATION FILED JULY 12. 1906.

J) MM F #MAM wifzeasea PATENT OFFICE.

WILLIAM H. MINER, OF omonoo; ILLINOIS.

BRAKE-SHOE FOR RAlLWAY-CARS.

Specification of Letters Patent. Patented Dec. 18, 1906.

. Application filed July 12,1906. Serial No. 325,807.

To all whom it may concern:

Be it known that 1, WILLIAM H. MINER, a citizen of the United States, residing inUhicago, in the county of Cook and State of Illinois, have invented a new and useful Im provement in Brake-Shoes for Railway-Cars, of which the following is aspecification.

My invention relates to improvements in brake-shoes for railway-cars or other vehicles.

The object of my invention is to provide a brake-shoe of a simple,'eflicient, and durable construction capable of being cheaply and conveniently manufactured, which with a minimum weight of metalwill afford a maximum amount of wear or effective braking or retarding action, in which all parts of the shoe will be securely locked together and the cast parts reinforced or strengthened, so that when the shoe becomes worn thin there will be little danger of breakage and no danger of parts of the shoe in case of breakage becoming entirely disconnected and dropping down upon the track, and thus derailing or endangering the train, and in which the connection between the shoe and itsattaching-lug may be strong, safe, and secure.

My invention consists in the means I employ to practically accomplish this object or result-that is to say, it consists in a brakeshoe having a solid composite body. comprising a cast-metal portion, preferably of castiron, and a tough; soft, or wrought-metal portion, preferably of steel plate, provided with a series of divergent lugs or prongs extending at angles from the back portion of the shoe-body through the same to the front orwearing-surface thereof, saidtough or soft metal or steel plate member serving as a tough metalback for the shoe and preferably having the attaching-lug formed integrally therewith and forged, clamped, or pressed up to the required shape and the lugs or prongs of said tough-metal or steel-plate member, which extend through the body of the shoe from back to front, forming in part the wearing-surface of the shoe and serving to increase the frictional or retarding action of the shoe and also to strengthen the cast portion and to lock and tie all parts thereof together, the divergent prongs of the toughmetal plate portion also serving to chill the adjoining surface of the cast-ironportion, and thus to increase the durability. and wearing qualities of the shoe and the cast metal portion and the soft ortough metal plate por- .back for the shoe.

' tion of the shoe being united into one solid composite mass. The tough-metal member is also preferably provided with integral reversely-turned flanges or lugs projecting in the opposite direction from the integral an gle-prongs to reinforce the extreme ends of the cast-metal portion of the shoe, and I refer also to provide the wearing-surface o the shoe with soft or tough metal inserts to increase the frictional action and wearing qualities of the shoe.

My invention also consists in the novel construction of parts and devices and inthe novel, combinations of parts and devices herein shown or described.

In the accompanying drawings, forming a part of this specification, Figure 1 is a back view of the brake-shoe embodying my invention. .Fig. 2 is a front view. Fig. 3 is a side elevation. Fig. 4 is a central longitudinal section on line 4 4 of Fig. 1. Fig. 5 is a detail section on line 5 5 of Fig. 4.

In the drawings, A represents the cast-,

metal portion of the shoe, and B the tough, soft, or Wrought-metal or steel-plate portion thereof, about which the cast-i on portion A is cast, so as to intimately and perfectly unite the two portions A and B into one solid comosite mass. The tough-metal portion B is furnished with a series of divergent integral prongs b, stamped up from the steel plate and extending at different angles to each other through the body of the shoe from the Iront to the back, so that the front edges 11 thereofwill constitute a portion of the Wearing-surface D of the shoe during the Whole life of the shoe as it Wears thinner and thinner in use. The angle-prongs b or some of them are also preferably furnished with holes or openings 0 through the same, so that when the iron or cast metal is cast about the soft or steel plate portion B it may extend continuously from one end of the shoe to the other in one solid continuous mass through the prongs as well as on each side thereof or beyond the edges thereof. The prongs b are narrower than the tough-metal or plate portion B of the shoe, so that this plate B has a skeleton portion b to form a continuous tough-metal.

The attaching-lug b is preferably an integral loop stamped, plressed or forged up from the steel or toug etal back plate B, and it is formed before the castiron or cast-metal ortion A is cast through and upon the toug soft metal or plate-steel flanges or anchoring-lips b, Which'are prefertions of the shoe.

"braced by the cast portion A of the shoe and 2 5' ualities of each depends u on and is modi- A iarly ada nomical manufacture.

"steel plate is out along the lines 12 b the cuts tsidered separately or individually, in uniting :wide divergent prongs themselves into one portionB. rThe-centering-lugs ai a are preferably of cast-iron and project over the end portion 1) of the soft-.metalor plate-steel portion B. At each end the plate-steel portion B is furnished with integral reversely-turoed ably bent about as illustrated in the drawings and which serve to reinforce, the extreme end of the cast portion of the shoebody.

To form the integral angle-prongs b, the

b b for each prongeing preferably divergent, so each prong acts as a dovetail, conand locking together the iron and steel-plate portions of the shoe, while at the same time each pair of rongs b b, by reason of their extending at divergent or different an les from each other, also serve to further lock and tie together the cast-iron and steel-plate por- F'F are soft or tou h metal inserts emextending transversely across the wearingface thereof and arranged, preferably, about as indicated in the drawings, between the outer ends or wearing-faces of the integral diver ent rongs b of the tough-metal portion "B oft es oe.

"When the cast-iron or cast-metal portion A of the-shoe is cast through and about the tough,-soft, or steel plate-portion B of the shoe, the divergent rongs I) serve to chill the iron or cast metal a jacent thereto, and thus to 'hardengand strengthen the same, and increase its durability and wearing qualities. Both portions A and B of the shoe thus mutually coact and cooperate to produce a composite shoe-body in which the frictional, heat-conveying, wearing, and structural ed by the other and toget er form a composite and solid or integral mass of great strength and durability and which is peculted to serve as an eflicient brakeshoe, whl e at the same time the construction is such as to be capable of cheap and eco- The divergent transverse pron s I) being each wide or blade-like and extending transversely across the longitudinally central castmetal ortion of the bod of the shoe are each indivi uall large enough to have a material chilling and hardening action upon the adj acent cast-metal portion of the shoe and serve in a measure like partitions to separate the cast-metal portion into a number of constituent segments, all of which, however, are inti-.-- mately united together and also with the composite and solid or integral mass and of great strength and durability and having peculiarly effective wearing qualities by reason of the efiicient chilling action of the wide diver ent prongs upon the cast-metal portion of tie body of the shoe.

1. A brake-shoe having a solid ,bomposite body comprising a cast-metal portion and a tough-metal portion, said tough-metal portion having integral divergent wide transverse prongs extending through the body of the shoe from the back to the front and saidv prongs constituting in' part the wearing-surface of the shoe, and serving to transversely separate and chill the longitudinally central cast portion of the body of the shoe, substantially as specified.

2. A brake-shoe having a solid composite body comprising a cast-metal portion and a steel-plate portion provided with divergent wide transverse prongs extending throu h the body of the shoe from the back to t e front and constituting part of the wearing- 5 surface of the shoe, and serving to transversely separate and chill the'longitudinally central cast portion of the body of the shoe, substantially as specified.

3. A brake-shoe having a solid composite o body comprising a cast-metal portion and a tough-metal plate portion provided with divergent wide transverse prongs extending through the body of the shoe from the back to the front and constituting part of the wearing-surface of the shoe, and serving to transversely separate and chill the longitudinally central cast portionof the body ofthe shoe, said integral prongs having each divergent or dovetail acting side cutedges, substantially as specified. v 4. A brake-shoe having a solid composite body comprising a cast-metal portion and a tough-metal plate portion provided with divergent wide transverse prongs extendin through the body of the shoe from the bac to the front and constituting part of the wearing-surface of the shoe, and serving to transversely separate and chill the longitudinally central cast portion of the body of the shoe, said tough-metal plate portion having a skeleton back part, substantiall as specified. 5. A brake-shoe having a so id composite body comprising acast-metal portion and a steel-plate portion provided with divergent wide transverse pron s extending throu h the body of the shoe ii-om the back to t e front and constituting part of the wearingsurfaceof the-shoe, and serving to transversely separate and chill the longitudinally central cast portion of the body ofthe shoe, said divergent prongs having openin s throu h the same, substantially as specified. 6. brake-shoe having a solid composite body comprising a cast-metal portion and a steel-plate portion provided with divergent wide transverse prongsextending throu h the surface of the shoe, and serving to transbody of the shoe from the back to t e front and constituting part of the-wearinging an integral, stamped-up attaching-loop and said cast portion having centering-lugs at each end of the shoe, substantially as specified.

8. A brake-shoe having a solid composite body comprising a cast-metal portion and a steel-plate portion provided with divergent wide transverse prongs extending throu h the body of the shoe from the back to t e front and constituting part of the wearingsurface of the shoe and serving to transversely separate and chill the longitudinally central cast portion of the body of the shoe, and said plate portion having anchoring lips gr ({langes at its ends, substantially as speci- 9. A brake-shoe having a solid composite body comprising a cast-iron portion Aand a tough-metal plate portion B, the latter forming a skeleton tough-metal back and being provided with integral wide transverse pron s extending through the cast-iron portion from the back to the front and constituting part of the wearing-surface of the shoe, and serving to transverselyseparate and chill the longitudinally central cast portion of the body of the shoe, substantially as specified.

10. A brake-shoe having a solid composite body comprising a cast-iron portion A and a plate-steel portlon B, "the latter forming a skeleton plate-steel back and being provided with integral prongs extendin through the cast-iron portion from the bac to the front and constituting part of the wearing-surface of the shoe, said prongs having openings through the same, substantially as specified.

1 1. A brake-shoe having a solid composite body com rising a cast-iron portion A and a plate-stee portion B, the latter forming a skeleton platesteel back and being provided with integral wide transverse prongs extending through the cast-iron portion from the back to the front and constitutin part of the wearing-surface of the shoe, an serving to transversely separate and chill the longitudinally central cast portion of the body of the shoe, said prongs having divergent or dovetail acting side edges, substantlally as specified.

12. A brakeshoe having asolid composite body comprising a cast-iron portion A and a of the shoe,

plate-steel portion B, the latter formin skeleton plate-steel back and being provi with integral wide transverse prongs extending through the cast-iron portion from the back to the front and constituting part of the wearing-surface of the shoe, and serving to transversely separate and chill the longitudinally central cast portion of the body of the shoe, said prongs extending at different pin les to each other, substantially as speci- 13. A brake-shoe having a solid composite body com risin a cast-iron portion A and a plate-stee portlon B, the latter formin a skeleton plate-steel back and being provi ed with integral wide transverse prongs extending through the cast-iron portion from the back to the front and constitutin part of the wearing-surface of the shoe, an servin to transversely separate and chill the longitudinally central cast portion of the body of the shoe, said plate-steel portion B havin bent anchoring ips or flanges at its ends, su stantially as specified.

14;. A brake-shoe having a solid composite body comprising a cast-iron portion A and a tough-metal plate portion P the latter forming a skeleton tough-metal back and being provided with integral prongs extending through thecast-iron portion from the back to the front and constituting part of the wearing-surface of the shoe, said tougha ed metal portion B having an integral attach ing-lug for the shoe, substantially as specified.

15. A brake-shoe having a solid composite body comprising a cast-metal portion and a tough-metal portion, said tough-metal portion having lntegral divergent prongs extending through the body of the shoe from the back to the front and said prongs constituting in part the wearing-surface of the shoe, and tough-metal inserts in the cast portion of the shoe between said integral divergent prongs of the tough-metal portion thereof, substantially as specified.

16. A brake-shoe having'a solid composite body comprising a cast-metal portion and a tough-metal portion, said tough-metal por-.

tion having integral divergent prongs extending through the body of the shoe from the back to the front and said prongs constituting in part the wearing-surface of the shoe, and tough-metal inserts inthe cast portion of the shoe between said integral divergent prongs of the tough-metal portion thereof, said to ugh-metal portion of the shoe having bent reinforcin -fianges at the ends thereof to strengthen t e cast portion of the shoebody at the ends, substantially as s ecified.

WILLIAMII. M NER. Witnesses:

H. M. MUNDAY, EDMUND AncooK.

IIO 

